Grails Servlet Filter Madness : ... ServletRequestAttributes는 ..GrailsWebRequest로 캐스팅 될 수 없습니다.

Question

Flex 단일 페이지 응용 프로그램이 UI로 작동하는 Grails 백엔드가 있습니다. 어떤 이유로 AMF 요청을 할 때 내 앱이 빠져 나옵니다. 다음과 같은 오류와 함께 내가 웹에서 다른 솔루션의 일부를 읽은

2014-04-20 21:07:55,572 [http-bio-8080-exec-6] ERROR errors.GrailsExceptionResolver -  
ClassCastException occurred when processing request: [POST] 
/OrlandoGrails/messagebroker/amf 
org.springframework.web.context.request.ServletRequestAttributes cannot be cast to 
org.codehaus.groovy.grails.web.servlet.mvc.GrailsWebRequest. Stacktrace follows: 
java.lang.ClassCastException: 
org.springframework.web.context.request.ServletRequestAttributes cannot be cast to 
org.codehaus.groovy.grails.web.servlet.mvc.GrailsWebRequest... 
2014-04-20 21:07:55,573 [http-bio-8080-exec-6] ERROR errors.GrailsExceptionResolver - 

Unable to render errors view: 
org.springframework.web.context.request.ServletRequestAttributes cannot be cast to 
org.codehaus.groovy.grails.web.servlet.mvc.GrailsWebRequest... 
java.lang.ClassCastException: 
org.springframework.web.context.request.ServletRequestAttributes cannot be cast to 
org.codehaus.groovy.grails.web.servlet.mvc.GrailsWebRequest 
Servlet.service() for servlet [Spring MVC Dispatcher Servlet] in context with path 
[/OrlandoGrails] threw exception [Request processing failed; nested exception is 
org.codehaus.groovy.grails.exceptions.GrailsRuntimeException: 

java.lang.ClassCastException: 
org.springframework.web.context.request.ServletRequestAttributes cannot be cast to 
org.codehaus.groovy.grails.web.servlet.mvc.GrailsWebRequest] with root cause... 
java.lang.ClassCastException: 
org.springframework.web.context.request.ServletRequestAttributes cannot be cast to 
org.codehaus.groovy.grails.web.servlet.mvc.GrailsWebRequest at 
grails.plugin.springsecurity.web.filter.GrailsAnonymousAuthenticationFilter.doFilter(GrailsAnonymousAuthenticationFilter.java:53 

(부품은 읽기 쉽도록 잘립니다), 그들은 내가 처음 내 springSecurityFilter 내 web.xml을 주문해야한다는 말을하고 마지막 매핑입니다 . 나는 그 일을, 아래

<?xml version="1.0" encoding="UTF-8"?> 
<web-app version="3.0" 
    metadata-complete="true" 
    xmlns="http://java.sun.com/xml/ns/javaee" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"> 

<display-name>/@grails.project.key@</display-name> 

<context-param> 
    <param-name>contextConfigLocation</param-name> 
    <param-value>/WEB-INF/applicationContext.xml</param-value> 
</context-param> 

<context-param> 
    <param-name>webAppRootKey</param-name> 
    <param-value>@grails.project.key@</param-value> 
</context-param> 

<listener> 
    <listener-class>org.codehaus.groovy.grails.web.context.GrailsContextLoaderListener</listener-class> 
</listener> 

<filter> 
    <filter-name>sitemesh</filter-name> 
    <filter-class>org.codehaus.groovy.grails.web.sitemesh.GrailsPageFilter</filter-class> 
</filter> 
<filter> 
    <filter-name>charEncodingFilter</filter-name> 
    <filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class> 
    <init-param> 
     <param-name>targetBeanName</param-name> 
     <param-value>characterEncodingFilter</param-value> 
    </init-param> 
    <init-param> 
     <param-name>targetFilterLifecycle</param-name> 
     <param-value>true</param-value> 
    </init-param> 
</filter> 

<filter-mapping> 
    <filter-name>charEncodingFilter</filter-name> 
    <url-pattern>/*</url-pattern> 
</filter-mapping> 
<filter-mapping> 
    <filter-name>sitemesh</filter-name> 
    <url-pattern>/*</url-pattern> 
    <dispatcher>REQUEST</dispatcher> 
    <dispatcher>ERROR</dispatcher> 
</filter-mapping> 


<servlet> 
    <servlet-name>grails</servlet-name> 
    <servlet-class>org.codehaus.groovy.grails.web.servlet.GrailsDispatcherServlet</servlet-class> 
    <init-param> 
     <param-name>dispatchOptionsRequest</param-name> 
     <param-value>true</param-value> 
    </init-param> 
    <load-on-startup>1</load-on-startup> 
    <async-supported>true</async-supported> 
</servlet> 
<servlet> 
    <servlet-name>gsp</servlet-name> 
    <servlet-class>org.codehaus.groovy.grails.web.pages.GroovyPagesServlet</servlet-class> 
</servlet> 
<servlet-mapping> 
    <servlet-name>gsp</servlet-name> 
    <url-pattern>*.gsp</url-pattern> 
</servlet-mapping> 

<session-config> 
    <session-timeout>30</session-timeout> 
</session-config> 

<welcome-file-list> 
    <welcome-file>index.html</welcome-file> 
    <welcome-file>index.jsp</welcome-file> 
    <welcome-file>index.gsp</welcome-file> 
</welcome-file-list> 

<listener> 
    <listener-class>flex.messaging.HttpFlexSession</listener-class> 
</listener> 
<servlet> 
    <servlet-name>Spring MVC Dispatcher Servlet</servlet-name> 
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> 
    <init-param> 
     <param-name>contextConfigLocation</param-name> 
     <param-value>/WEB-INF/config/web-application-config.xml</param-value> 
    </init-param> 
    <load-on-startup>1</load-on-startup> 
</servlet> 
<servlet-mapping> 
    <servlet-name>Spring MVC Dispatcher Servlet</servlet-name> 
    <url-pattern>/messagebroker/*</url-pattern> 
</servlet-mapping> 

/ㅋ/MessageBroker에/AMF, 그래서 나는 것입니다 액세스되고있는 URL (Grails는 그것의 홀드 (Ahold)을 취득하기 전에) 내 web.xml의 템플릿입니다했다 블레이즈 된 메시지 중개인 처리기 만 요청을 받았을 것이라고 생각했지만 분명히 틀 렸습니다.

이 문제에 대한 도움을 주시면 감사하겠습니다.

Answer 1

web.xml의 문서 순서 때문에 charEncodingFilter은 항상 sitemesh 필터 전에 실행됩니다.

내가 추측하고 있지만 charEncodingFilter에 의해 생성 된 ServletRequestAttribute 인스턴스가 sitemesh 필터가 실행될 때 잘못된 유형으로 캐스팅되고있는 것으로 보입니다.

filter-mapping의 위치를 ​​바꾸려고 했습니까? 예 :

<filter-mapping> 
    <filter-name>sitemesh</filter-name> 
    <url-pattern>/*</url-pattern> 
    <dispatcher>REQUEST</dispatcher> 
    <dispatcher>ERROR</dispatcher> 
</filter-mapping> 
<filter-mapping> 
    <filter-name>charEncodingFilter</filter-name> 
    <url-pattern>/*</url-pattern> 
</filter-mapping>